Jamoneisha Merritt was at a sleepover at her friend's house near Findlay Avenue and East 166th Street early Monday morning when one of her classmates got boiling water and poured it in a cup, according to police.

Jamoneisha Merritt, 11, suffered second-degree burns.

Jamoneisha's cousin, Yolanda Richardson, said Jamoneisha and the 12-year-old had been arguing.

"Her and her friend got into an argument and she told her if she goes to sleep they were going to do something to her," Yolanda said.

Jamoneisha was sleeping when the 12-year-old girl, who has not been identified, poured the cup of scalding water on her, according to police.

She was jolted awake by the scorching water, which burned much of her upper body, including her face, back, shoulders, neck and chest, police said.

"She said she was screaming that it was burning," Yolanda said.

First responders rushed her to Harlem Hospital in serious but stable condition. She was admitted to a burn unit with second-degree burns.

Her family said she's in a lot of pain and is emotionally scarred by the incident. They said they don't want to show Jamoneisha the extent of her burns and what she looks like right now, but photos provided to News 4 show her with skin missing from her face, shoulders and neck.

"I could only be with her for a little bit, because I can't hold myself together," Yolanda said. "I don't want her to see me cry."

Jamoneisha's family says she is joyful, fun and energetic. They say the boiling water may have burned her face, but her spirit has not been extinguished.

"She's just a bundle of joy, you can't be around her and be sad," her cousin, Starshanae Nixon, said.

It's unclear how long Jamoneisha will be in the hospital or what her prognosis is.

The 12-year-old girl was arrested and charged with assault, police said. At this point, none of the other children are facing charges.